#include<iostream>
#include<algorithm>
using namespace std;
int main()
{
	string s;cin>>s;
	int i=0;
	while(!(s[i]>='0'&&s[i]<='9'))i++;
	string t=s.substr(0,i);
	reverse(t.begin(),t.end());
	cout<<t<<s.substr(i)<<endl;
}